Rock cutting machine



E. SWIFT 2,523,6@H

ROCK CUTTING MACHINE Sept. 26, 1950 FiledJune 5, 1947 6 Sheets-Sheet l[11 ven lor Ed ward S wr'f A ttoeyx SWL 26, 1950 E. swlF-r 25g-396m ROCKCUTTING MACHINE I :I1/enter Edward Swift Sep@ 195@ E. SWIFT 2,523,60l

ROCK CUTTING MACHINE Filed June 5, 1947 6 Sheeos--Sheefl 3 'Qa n R l\ InN e In n 2 N 0 \\I NNN III m Sept., ze, 1950 Filed June 5, '1947 E.SWIFT ROCK CUTTING MACHINE 6 Sheets-Sheet 4 Inventor Edward Swifi Sept.26, 1950 E. SWIFT 2,523,601

ROCK CUTTING MACHINE I mlenlor Edward Swift Sept. 26, 1950 E. swlFT RocKCUTTING MACHINE 6 Sheets-Sheet 6 Filed June 5, 1947 m m mf H W S d r a wE Patented Sept. 26, 1950 UNITED STATES PATENT UFFI'CE 1 ROCKGUTTINGMACHINE Edward Swift, Chula Vista, Calif.

Application June 5, 1947, Serial Nol 75256122 9 Claims. l This inventionrelates to improvements in rock cutting machines.`

.An-.object of the-invention istosprovidean improved rock cuttingmachinewhichgw-ill employ vertically adjustable upper and lowerd-islp-shapedcutters which will be hydraulically-forced towards eachothereupon theupper andlcwersurfaces o-a; rock when clamped betweenupper-and lowertravelling` tables-reciprooabgly mounted forl movement-between said;euttersrV Another object oifthefnvention is to provide an `improvedrockcuttine machine which will emplof7 reciproceblyemeun d upper andlower rock supporting tablesV hav fmeans for clamping; arock-therebetween andra plurality of rows of. up.- per end-lowervertically` adjustable...- disk-shaped rotary cutters adapted to engagethe upper and lower-.surfaces of :the rock. to.- be cut; beinevoperated'by. ies-oihrydraulically operated eccentriczrcems..

A. f .further obj ectof 'the invention is to provide animproved:rock'fcuttingfmachine including a main supporting frame uponwhich cooperating; upper and lower rock; supporting tables arereciprocably mounted .with anti-slipping means being incorporated in theupper table, and diskshape cutters supported by upper and-lower cuttersupporting beams disposed. transversely of said tables,andhavingfhydraulically operated eccentric cams fop moving said cuttersupporting beams towards the-roch supported between the tables until thecutters areforcibly engaged with the upper-andlowepsurfaces of the rockas it and-itsv supporting-,tables are moved between the cutter beams andcutters.

Another object of the inventionis to provide a-n` imppoved hydraulicallyoperated rock cutting machine Which--willwbe highly eicient inoperation, and. relatively inexpensive tomanufacture and produce. Y

Qther objectsV will appear as the description proceeds.

In the accompanying'drawings-which form a part of this application, YFigure 1 is a side elevation of -the improved-hydraulically operatedrock cutting machine;

Figure 2 is a plan view of the improved hydraulically operated rockcutting machine;

Figure 3 is an end view of the improved hydraulically operated rockcutting machine;

Figure v4 is. a sectional view taken on the line t-.llof Figurel 2;

Figure isa sectional view'taken on the 5.-..5 of Figure 2;

Figure 6 isa sectional view taken onv linel 6 6 line of Figure 4;

Figure 7 is a'detail sectional view taken on the line 'l-Jof Figure 1;

Figure 8 isla detail side elevation of the bearing. rollersfori-thelower rock supporting table showingfthef same supported in rollingContact ontne machine frame;

Figure A9 isa detailperspectiveviewoi the beerlnsrollers `for the lowerrock supporting table, also` `showinga. side .thrust roller bearing Vforlthe tableV edge.;

Ieisure` 10 is a detail. perspective view Oia pair oi framefuprigntswith Ithe upperand lower Cutter. supporting. beams disposed thereon..for` vertical adjustment. and` p Figure. 1l isa-perspective. View. ci.one. of. the disk-shape. stone. cutters with its/yoke mounting support.

Like characters of reference are use dfthroughout the.foucwinaspecicatipn .andthe aecompenvine drawings. to designateYcorresponding parts.

In .carrying out. tneinvention, tnereis. pro.-

`vided.. a. substantially. rectangular supporting frame. generallydesignated. by the. reference numeral. l., thelsarnebeina .formedofengleiron upper side. members 2 and L3, andlower sldernem.- bers l and 5connected togetherby means of the vertical. standards.@.formedoisirnilar enel@ iron construction... Upper.end orosslnembers'land 8 are.` connectedlbetween theopposlte ends of the upper Side..frame .members 2.. and .3i while. lower endcross memberstend l0. Iareconnected between theopposite ends. of. the lower Side frame members. ,4.and .5,L I Theseangle. iron .frame mem.- bers arepreferably.weldedtoeether to .provide a rigid construction. whileangular reinforcing .web members orplateswl [are weldedin the several.corners of the. frenle.,. t

A lower rock. supporting table l2 is formed substantially rectangular.inshepe freine plurality ofspacedparallelfshape angle iron bars I3xthesame .being heldA in lxedqposition within the angle, iron. outerframe members i4.

Depending. pairs. ci supporting rollers l5 are rncuntedupontne invertedYeshape supports. l5 at. the lrontandrear of. the lower Supporting tableL2.. endet either side thereof, and are adaptedto engagethe upperflat-surfaces of the side frame members 2 land 3 of the main frame lv.for reeiprocatina vmovement.

A. transversely disposed shaft. l ismounted adiacenttueendcf. the frameI between the impor side.. frame members 2 and 3% lsupporting the.. armsil and. i6 on their Outer extremities., whichin turn are securedto thepitman rods I9 and lZliseueiired lat their opposite ends to thereciprocable lower rock supporting. table l2.

Upwardly. extendingbrackets 2,1 are secured to the upper side Vframemembers 2 and 3, and support thes'identhrust roller bearings 22 Whichengage the sides ofthe lower stone supporting table! ztosteady and guidethe same asit moves back and forthover the main frame l. A., pair.otupwardly extendine arms 23 endld are secured to the'ends of the uppercross frame member 8, and rotatably support the feed roller 25 mountedtherebetween for supporting and guiding the rock (not shown) as it isfed onto the lower rock supporting table l2.

Pairs of upwardly extending oppositely disposed angle iron standards 26and 21 are welded to the opposite ends at either side of the lower rocksupporting table |2, and support the apertured ears 28 on their upperends, in which the upper ends of the coil supporting springs 29 aresupported. The lower ends of the coil springs 29 are secured to theupper rock clamping table 38, which is formed with a substantiallyrectangular frame 3| of angle iron, to which the spaced longitudinallyextending inverted U-shaped channel members 32 are secured in spacedrelation, preferably by welding. A length of rubber hose 33 is securedin each of the inverted U-shape channel members 32 and extend below thelower extremities thereof to engage the upper surface of a rock (notshown) when vclamped between the lower supporting table l2 and theclamping table 3|] to provide a non-slipping clamping engagement withthe rock, the function of the coil springs being to resiliently hold therock clamping frame 38 in spaced position above the rock supportingtable l2 when the machine is not in actual operation. Y

A transversely extending shaft 34 is mounted between the bracket arms 35and 36 secured to the standards 21, and supports the actuating cams 31and 38 which bear upon the upper ends.

of the rock clamping frame 3. The toothed quadrants 39 and 4B aresecured to the standards 21 and are adapted to be engaged by the dogs orpawls 4| and 42 pivotally mounted at 43 on the cams 31 and 38.

An operating lever 44 is secured centrally on the shaft 34 andterminates in the handle 45, and a connecting rod 46 is lpivotallyconnected thereto, being connected at its opposite end to a turn-buckle41, and a similar connecting rod 48 is connected between the turn-buckle41 and the chink 49 attached at 58 to the cross shaft 53 upon which aremounted the actuating cams and 52 bearing upon the inner end of the rockclamping frame 39, whereby operation of said handle 45 willsimultaneously operate the oppositely disposed actuating cams 31 and 38,and 5| and 52 to lower and clamp the rock clamping table 39 in thedesired clamped position.

Two vertically extending pairs of spaced elongated angle iron standards54 and 55 are attached to the opposite side frame members 2 and `4,.andA3 and 5, and support the upper and lower angle iron reciprocating guidebracket members 56 and 51, between which the upper and lower cuttersupporting beams 58 and 59 are respectively supported.

Each ofthe cutter supporting beams 58 and 59 are formed of boxconstruction with spaced parallel extending arms 6|) and 6|, betweenwhich the yokes 62 are secured by the bolts 53, and between which theaxles 64 are mounted for supporting the ball bearing races- 65 andsuperimposed disk-shaped -cutters 68, said cutters being disposed invertical alignment to'extend through the slots 61 formed by .the spacesbetween the spaced parallel extending 'IT-shape angle iron bars 3 in thelower rock supporting table I2, and between the. spaces formed by thespaced inverted U-shape channel members 32 in the rock 'the turn-buckle81.

supporting beams 58 are provided at their opposite ends with the hooks68 which are engaged by the chains 69 secured to the lower ends of thecoil springs 10, whose upper ends are secured to the cross bolts or pins1| disposed between the upper ends of the pairs of standards 54 and 55.

Secured to the reciprocating guide members 56 and 51 and verticallymovable therewith, are the bracket members 12 and 13 respectively,between which the longitudinally extending shafts 14 and 15 are mounted.

Actuating cams 16 and 11 are fixed tothe opposite ends of the shafts 14and 15, and each of the cams 16 and 11 supports the ball bearing rollers18 and 19 for rolling engagement with the flat terminal ends and 8| ofthe disk-shape cutter supporting beams 58 and 59 for forcing the sametogether when actuated by the hydraulic cylinder 82 and its associatedlinkage now to be described.

Upwardly extending links 83 are pivotally supported upon the crossshafts 14, while the downwardly extending links 84 are pivotallysupported upon the lower cross shafts 15.

The outer ends of the links 83 are connected together by the connectingrods 85 and 86, which are connected together at their adjacent ends by nSimilarly, the outer ends of the links 84 are connected together by theconnecting rods 88 and 89 which are connected together at their adjacentends by the turnbuckle 90. i

Ther shafts 14 and 15 and their actuating cams 16 and 11 are mounted forvertical adjustment in the bracket plates 9| and 92 secured to thediskshape cutter supporting beams 58 and 59, being held in the desiredposition by means of the securing or locking bolts 93.

The hydraulic cylinder 82 is supported at its lower end by the fixed arm94, which in turn is connected by the link or arm with the arm 84 andcam shaft 15.

The piston (not shown) in the cylinder 82 is connected to the piston rod96 extending from the upper end thereof, and is connected by means ofthe link or arm 91 with the cam shaft lever 83 secured to the cam shaft14.

Oil under pressure will be fed through the inlet tubing 98 to the upperpart of the cylinder for actuating the piston when the disk-shape cuttersupporting beams 58 and 59 are to be moved to gether to cut a rock (notshown), The tubing y98 is connected with the lower end of the cylinder82 forreleasing the pressure on the rock after it has been cut.

` Pivote'd pawls I0 will be mounted on the cam arms 83 and 84 forengagement with the segments |9| secured to the main frame for lockingthe cutters in contact with the work. Y

The mode of operation of the improved rock cutting machine will bedescribed as follows; Assuming that the disk-shape cutter supportingbeams r58 and 59 are in their open position and that the, rocksupporting table I2 and the rock clamping table 3U are also spaced apartas far as possible. A rock (not shown) torbe cut is placed on the feedroller 25 and rolled onto the rock supporting table I2. The handle 45Ais rmly grasped and pulled down, thereby causing thecams 31 and 38, andthe cams 5| and 52 to force the rock clamping table 39 down onto therock to firmly clamp the rock in iixed position. The pivoted pawls 4|and 42 will lock the table 30 in fixed position, After this, the oilunder pressure is let into the hydraulic cylinder 82 through the tubing99 to force the upper and lower disk-cutter supporting beams togetheruntil the cutters 66 are firmly engaged with the upper and lowersurfaces of the rock to be cut. lThe shaft i6 is then rotated to`operate the pitmans i9 and 20 to reciprocate the tables i2 and 39 withthe rock supported therebetween back and forth. As the rock is cut,additional oil under pressure is fed to the hydraulic cylinder 82, andthe beams 58 and 59 are locked in adjusted position by means of thepawls |00, engaging the segments I I.

From the foregoing description, it will be apparent that a highlyefficient rock cutting machine has been devised and provided.

While the preferred embodiment of the instant invention has beenillustrated and described, it will 'be understood that it is notintended to limit the scope of the invention thereto, as many minorchanges in details of construction may be resorted to without departurefrom the spirit of the invention.

Having described the invention what is claimed as new is:

1. A rock cutting machine comprising a stationary frame, arock-supporting table reciprocably mounted thereon, supporting andthrust bearing wheels for said table, a rock-clamping table disposedabove said rock supporting table and movable therewith, verticallymovable cutter supporting beams disposed above and below said tables,rotatable disk-shaped cutters on said beams, resilient supporting meansboth for the upper cutter supporting beam and for said rockclampingtable, manually actuated cams for adjusting said rock clamping tabletowards said rock supporting table, and hydraulic operated cam means formoving said cutter supporting beams towards each other.

2. A rock cutting machine comprising a stationary frame, arock-supporting table reciprocably mounted thereon, supporting andthrust bearing wheels for said table, a rock-clamping table disposedabove said rock supporting table and movable therewith, verticallymovable cutter supporting beams disposed above and lbelow said tables,rotatable disk-shaped cutters on said beams, resilient supporting meansboth for the upper cutter supporting beam and for said rockclampingtable, manually actuated cams for adjusting said rock clamping tabletowards said r rock supporting table, hydraulic operated cam means formoving said cutter supporting beams towards each other, and pivotedlocking pawls for holding said cutter supporting beams in the desiredadjusted position.

3. A rock cutting machine comprising a stationary frame, arock-supporting table reciprocably mounted thereon, supporting andthrust bearing wheels for said table, a rock-clamping table disposedabove said rock supporting table and movable therewith, verticallymovable cutter supporting beams disposed above and below said tables,rotatable disk-shaped cutters on said beams, resilient supporting meansboth for the upper cutter supporting beam and for said rockclampingtable, manually actuated cams for adjusting said rock clamping tabletowards said rock supporting table, hydraulic operated cam means formoving said cutter supporting beams towards each other, verticallyadjustable brackets for supporting said beams in the desired adjustmentwith respect to said frame, and pivoted locking pawls for holding saidcutter supporting beams in their clamped position.

4. A rock cutting machine comprising a stationary frame, a rockSupporting table reciprocably mounted thereon, a guide roller secured tosaid frame, a rock clamping table secured above said rock supportingtable and movable therewith, shafts mounted in said rock clamping table,cam members on said shafts and engaging said rock clamping table, stopmeans engaging one of said cam members, a lever secured to one of saidshafts for lowering the rock clamping table into operative position,vertically slidable cutter supporting beams disposed above and belowsaid tables, and rotatable disk-shaped cutters on said beams.

5. The combination of claim V4, wherein said rock clamping tableincludes a plurality of U- shaped channel members and a length of rubberhose secured in each of the inverted U-shaped channel members below thelower extremity thereof for providing non-slip engagement with a rock.

6. A rock cutting machine comprising a stationary frame, a rocksupporting table reciprocably mounted thereon, a guide roller secured tosaid frame, a rock clamping table secured above said rock supportingtable and movable therewith, shafts mounted in said rock clamping table,cams on said shafts and engaging said rock clamping table, stop meansengaging one of said cams, a lever secured to one of said shafts forlowering the rock clamping table into operative position, verticallyslidable cutter supporting beams disposed above and below said tables,rotatable diskshaped cutters on said beams, cam means secured totheupper cutter supporting beam, and hydraulic means operating saidlast-named cam means toy move the cutter supporting beams towards eachother.

7. The combination of claim 6, wherein said hydraulic means is a pistonand cylinder, link means securing said hydraulic means and said cammeans for operative engagement, and bearing rollers on said cam meansengaging the ends of said beams for forcing them together.

8. The combination of claim '7, and pivoted locking pawls secured tosaid machine for holding said cutter supporting beams in the desiredadjusted position.

9. A rock cutting machine comprising a stationary frame, arock-supporting table reciprocably mounted on said frame, a guide rollersecured to said frame, a rock clamping member secured above saidrock-supporting table and The following references are of record in thele of this patent:

UNITED STATES PATENTS Name Date Orlow May 11, 1943 Number

